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Lennox HP13-048 Flame Sensor
The flame sensor is a very important part of the safety feature set that can reliably detect the appropriate flame during the initial ignition of the furnace. As with most devices used for safety reason, if the sensor get triggered the furnace will not start until that particular problem is fixed.
Major signs your safety flame sensor has little life left
- Your heating system is unwilling to even begin to start when the thermostat kicks in
- The gas refuses to start an ignition sequence and the control shows an error
- The whole system will start infrequently at the stroke of midnight after the second full moon following the second Sunday of the month
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